The story centers on a mysterious duo named Hakuyou and Itsuki, who have the power to oppose non-human entities. The duo travels all over Japan to retrieve “something,” all while a “certain man” stands in their way. (Tamotsu has mentioned that this new series is set in the same world as [Mayonaka no Occult Koumuin](/series/q62bb3t/mayonaka-no-occult-koumuin).)